Flora
There are many, many, many different types of plants in TerraFirmaCraft.
Different plants appear in different Climates, and their appearance may change over the current season - going through cycles of flowering and laying dormant, or changing color as the local temperature changes. Colorful flowers can typically be crushed in a Quern for Dye.
Standard
Standard plants are like small flowers. They grow on grass, dirt, and farmland.
Dry
Dry plants are like standard plants, but they can grow on sand. These generally only spawn in areas with low rainfall.
Cacti
Cacti can grow two blocks high, and they will damage you!
Creeping
Creeping plants take the shape of the surrounding block faces. They mostly spawn in blobs on the ground
Epiphyte
Epiphytes only live on the sides of logs.
Short Grass
Short grass blocks grow taller with age. They also are able to grow on peat and mud.
Tall Grass
Tall grass blocks are just tall enough to block your field of view.
Vines
Vine blocks spread around the world on their own, if it's warm enough.
Weeping Vines
Weeping vines grow downward from an anchoring block.
Twisting Vines
Twisting vines twist upward from the Earth. They can come in a solid variant.
Water Plants
Water plants are restricted to either spawn in fresh or salty water. Otherwise, they grow and act much like the plants you see on the surface. Some water plants can be cooked for food.
Standard Water
Standard water plants can be broken with a Knife to get Seaweed.
Water Grass
Water grasses are grasses that grow under the water.
Tall Water Plant
Tall water plants can grow with just the bottom block in water. Water Taro and Cattail can be broken with a Knife for Roots.
Floating
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Floating plants sit on top of the water. Boats will break them on contact.
Kelp
Kelp are twisting vines that grow underwater.
Tree Kelp
Tree kelp grow into intricate trees underwater. The flowers can be harvested with a Knife.